Component Inspection
- CHECK COOLING FAN SPEED SENSOR
- Turn ignition switch OFF.
- Disconnect electrically-controlled cooling fan coupling harness connector.
- Rotate the electrically-controlled cooling fan coupling slowly with hand and check the voltage between electrically-controlled cooling fan coupling connector terminals under the following conditions.
+
-
Condition
Voltage (V)
(Approx.)
Electrically-controlled cooling fan coupling
Terminal
5
4
- 5 V direct current supply to terminal 2
- Terminal 4 connect to ground
0 <=> 5
NOTE: The voltage is in waveform
Is the inspection result normal?
YES
INSPECTION END
NO
Replace Electrically-controlled cooling fan coupling.